# WormGears Brain vs Hidden Chess

The clearest difference is in-app purchases: WormGears Brain at none against Hidden Chess's 7. Hidden Chess's advantage is iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Hidden Chess sells 7 one-off in-app purchases. WormGears Brain asks for nothing beyond the download.

## The numbers

| Metric | WormGears Brain | Hidden Chess |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Monthly |
| Size | 191 MB | 207 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | +17 |
| Developer | [Ka Chun CHEUNG](https://appshunter.io/developer/1475447863) | [Apollo Software Pte Ltd](https://appshunter.io/developer/1171694801) |

## What reviewers say

### WormGears Brain

[App page](https://appshunter.io/ios/app/wormgears-brain-teasing-puzzle/id6762055121)

**In-app purchases:** none


### Hidden Chess

[App page](https://appshunter.io/ios/app/hidden-chess-shadow-chess/id6780352762)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin1 | $1.99 | one-time |
| Coin2 | $2.99 | one-time |
| Coin3 | $4.99 | one-time |
| Coin4 | $7.99 | one-time |
| Coin5 | $11.99 | one-time |
| Coin6 | $19.99 | one-time |
| Coin7 | $29.99 | one-time |


## Frequently asked questions

### Is WormGears Brain free?

WormGears Brain is free to download, with no in-app purchases.

### Is Hidden Chess free?

Hidden Chess is free to download, with in-app purchases available.

### Do WormGears Brain or Hidden Chess have ads?

Both WormGears Brain and Hidden Chess show ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*